Document ranges for years in copyright notices.

diff --git a/COPYING b/COPYING
index 37b50f0..6994750 100644 (file)
--- a/COPYING
+++ b/COPYING
@@ -3,6 +3,9 @@ software is distributed under the GNU lesser general public license
 version 2.1, which you can find in the archive under the name
 LICENSE-LGPL-2.1.
 
+For any copyright year range specified as YYYY-ZZZZ in this package
+note that the range specifies every single year in that closed interval.
+
 Some perticular files distributed with the project have other
 licenses. More specifically, these files are listed below, along with
 their license.